基于Ubuntu14.04安装Canvas LMS的Production版

官方安装教程地址：https://github.com/instructure/canvas-lms/wiki/Production-Start

大家可以按照官方的地址一步一步安装。

Canvas被Black Duck标榜为"唯一的一款商业开源学习管理系统，而且是唯一的一款部署在云端的学习管理系统LMS"。

Canvas的确是一款优秀的lms，界面美观/功能完备/丰富的API，尤其适合校内教学使用，有班级/小组/学期的概念。

下面是安装过程

首先，要安装一台干净的Ubuntu14.04，只安装open ssh，建议安装成纯英文系统。

接下来可以安装官方的教程一步一步安装

1. 安装Postgres数据库，命令如下

   sudo apt-get install postgresql-9.3

   
   
2. 配置Postgres，命令如下

   sudo -u postgres createuser canvas --no-createdb \
      --no-superuser --no-createrole --pwprompt
   
   sudo -u postgres createdb canvas_production --owner=canvas

   
   
3. 安装Git软件，命令如下

   sudo apt-get install git-core

   
   
4. 通过GitHub获取Canvas-LMS代码并设置分支,本地放在/var下面，命令如下

5. git clone https://github.com/instructure/canvas-lms.git canvas
   
   cd canvas
   
   git branch --set-upstream-to origin/stable

   
   
6. 安装Ruby2.1/2.2的apt源,命令如下

    sudo apt-get install software-properties-common
    sudo apt-add-repository ppa:brightbox/ruby-ng
    sudo apt-get update

   
   
7. 安装Ruby2.2（可自选2.1或2.2），命令如下

   sudo apt-get install ruby2.2 ruby2.2-dev zlib1g-dev libxml2-dev \
                          libsqlite3-dev postgresql libpq-dev \
                          libxmlsec1-dev curl make g++

   
   
   
8. 安装Ruby2.1（可自选2.1或2.2），命令如下

   sudo apt-get install ruby2.1 ruby2.1-dev zlib1g-dev libxml2-dev \
                          libsqlite3-dev postgresql libpq-dev \
                          libxmlsec1-dev curl make g++

   
   
   
9. 安装Node.js,命令如下

   curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
   sudo apt-get install nodejs

   
   
10. 设置系统账户为Postgres的超级用户，命令如下

    sudo -u postgres createuser $USER
    sudo -u postgres psql -c "alter user $USER with superuser" postgres

    
    
11. 使用gem安装bundler，命令如下

    sudo gem install bundler --version 1.12.5
    bundle install --path vendor/bundle

    
    
12. 设置Canvas默认配置，命令如下

    for config in amazon_s3 database \
      delayed_jobs domain file_store outgoing_mail security external_migration; \
      do cp config/$config.yml.example config/$config.yml; done

    
    
13. 配置数据库文件，修改为自己设置的数据库密码，命令如下

    cp config/database.yml.example config/database.yml
    
    nano config/database.yml

    
    
14. 配置SMTP邮件服务器，命令如下

     cp config/outgoing_mail.yml.example config/outgoing_mail.yml
    
    nano config/outgoing_mail.yml

    
    
15. 配置域名，命令如下

    cp config/domain.yml.example config/domain.yml
    
    nano config/domain.yml

    
    
16. 配置安全字符串文件，安全字符串不能少于20个字符，命令如下

    cp config/security.yml.example config/security.yml
    
    nano config/security.yml

    
    
17. 初始化数据库，命令如下

    cd /var/canvas
    
    RAILS_ENV=production bundle exec rake db:initial_setup

    
    
18. 添加Canvas用户，命令如下

    sudo adduser --disabled-password --gecos canvas canvasuser

    
    
19. 配置缓存文件，命令如下

    cd /var/canvas
    mkdir -p log tmp/pids public/assets public/stylesheets/compiled
    touch Gemfile.lock
    sudo chown -R canvasuser config/environment.rb log tmp public/assets \
                                  public/stylesheets/compiled Gemfile.lock config.ru

    
    
20. 接着安装npm并运行生成缓存文件，命令如下

    npm install
    RAILS_ENV=production bundle exec rake canvas:compile_assets

    
    
21. 修改配置文件权限，命令如下

    sudo chown canvasuser config/*.yml
    sudo chmod 400 config/*.yml

    
    
22. 配置Passenger 的apt源，命令如下

    sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 561F9B9CAC40B2F7
    sudo apt-get install -y apt-transport-https ca-certificates
    sudo sh -c 'echo deb https://oss-binaries.phusionpassenger.com/apt/passenger trusty main > /etc/apt/sources.list.d/passenger.list'
    sudo apt-get update

    
    
23. 安装Passenger 及Apache，命令如下

    sudo apt-get install passenger libapache2-mod-passenger apache2

    
    
24. 启用mod_rewrite模块，命令如下

    sudo a2enmod rewrite

    
    
25. 启用Apache的SSL服务，命令如下

    sudo a2enmod ssl

    
    
26. 删除Apache默认站点，命令如下

    sudo unlink /etc/apache2/sites-enabled/000-default.conf

    
    
27. 创建新的站点配置文件并写入一下信息，命令如下

    sudo nano /etc/apache2/sites-available/canvas.conf

    内容：可以对应修改一下域名等信息

    <VirtualHost *:80>
      ServerName canvas.example.com
      ServerAlias files.canvas.example.com
      ServerAdmin [e-mail]
      DocumentRoot /var/canvas/public
      RewriteEngine On
      RewriteCond %{HTTP:X-Forwarded-Proto} !=https
      RewriteCond %{REQUEST_URI} !^/health_check
      RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L]  
      ErrorLog /var/log/apache2/canvas_errors.log
      LogLevel warn
      CustomLog /var/log/apache2/canvas_access.log combined
      SetEnv RAILS_ENV production
      <Directory /var/canvas/public>
        Options All
        AllowOverride All
        Require all granted
      </Directory>
    </VirtualHost>
    <VirtualHost *:443>
      ServerName canvas.example.com
      ServerAlias files.canvas.example.com
      ServerAdmin [e-mail]
      DocumentRoot /var/canvas/public
      ErrorLog /var/log/apache2/canvas_errors.log
      LogLevel warn
      CustomLog /var/log/apache2/canvas_ssl_access.log combined
      SSLEngine on
      BrowserMatch "MSIE [2-6]" nokeepalive ssl-unclean-shutdown downgrade-1.0 force-response-1.0
      BrowserMatch "MSIE [17-9]" ssl-unclean-shutdown
      # the following ssl certificate files are generated for you from the ssl-cert package.
      SSLCertificateFile /etc/ssl/certs/ssl-cert-snakeoil.pem
      SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key
      SetEnv RAILS_ENV production
      <Directory /var/canvas/public>
        Options All
        AllowOverride All
        Require all granted
      </Directory>
    </VirtualHost>

28. 启用canvas站点，命令如下

    sudo a2ensite canvas

    
    
29. 安装redis服务器的apt源及软件，命令如下

    sudo add-apt-repository ppa:chris-lea/redis-server
    sudo apt-get update
    sudo apt-get install redis-server

    
    
30. 配置站点缓存文件，命令如下

    cd /var/canvas/
    cp config/cache_store.yml.example config/cache_store.yml
    nano config/cache_store.yml
    sudo chown canvasuser config/cache_store.yml
    sudo chmod 400 config/cache_store.yml

    配置内容如下

    test:
        cache_store: redis_store
    development:
        cache_store: redis_store
    production:
        cache_store: redis_store

    
    
31. 配置redis文件，命令如下

    cd /var/canvas/
    cp config/redis.yml.example config/redis.yml
    nano config/redis.yml
    sudo chown canvasuser config/redis.yml
    sudo chmod 400 config/redis.yml

    配置内容如下：

    production:
      servers:
        - redis://localhost

    
    
32. 安装QTIMigrationTool，参照https://github.com/instructure/QTIMigrationTool/wiki
33. 设置canvas服务自动启动并重启Apache，命令如下

    sudo ln -s /var/canvas/script/canvas_init /etc/init.d/canvas_init
    sudo update-rc.d canvas_init defaults
    sudo /etc/init.d/canvas_init start
    sudo /etc/init.d/apache2 restart

到这里就可以访问设置的域名或者直接访问IP，如果看到登陆界面，恭喜您完成了Canvas安装了！